One of the main factors that led to the creation of KWADRON® cartridges was the desire to create a product that has the highest usability, and above all the highest quality unattainable for other brands. All needles have a membrane and sterilized until 2027. Brand: Kwadron Cartridges Needle Size: #10 (0.30mm diameter) Needle Type: Magnum Shader, & Curved Soft Edge Magnums. Needle Taper: Medium Taper Needle Polish: Smooth Box: 20pcs/box